The Latest Determination of Antiproton Mass by Precision Three-Body Calculation of Antiprotonic Helium Atoms

  • Y. Kino
  • M. Kamimura
  • H. Kudo
Conference paper
Part of the Few-Body Systems book series (FEWBODY, volume 14)


The Particle Listings 2000 edition gave the recommended value of antiproton mass, for the first time, to be within 5 × 10−7 in the relative deviation from the proton mass; this can be a test of the CPT invariance. The value was derived by our precision 3-body calculation to analyze the laser spectroscopy data of metastable states in antiprotonic helium atoms taken at CERN. The 2002 edition reported an one-order smaller value, 6 × 10−8, based on further development of both the experiment and our calculation.


Metastable State Helium Atom Proton Mass Auger Transition Weak Equivalence Principle 
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Copyright information

© Springer-Verlag/Wien 2003

Authors and Affiliations

  • Y. Kino
    • 1
  • M. Kamimura
    • 2
  • H. Kudo
    • 1
  1. 1.Department of ChemistryTohoku UniversitySendaiJapan
  2. 2.Department of PhysicsKyushu UniversityFukuokaJapan

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